8275747985 has 16 divisors (see below), whose sum is σ = 10693296000. Its totient is φ = 6125534976.

The previous prime is 8275747969. The next prime is 8275748023. The reversal of 8275747985 is 5897475728.

It is a cyclic number.

It is not a de Polignac number, because 8275747985 - 2⁴ = 8275747969 is a prime.

It is a super-2 number, since 2×8275747985² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820085 + ... + 830114.

It is an arithmetic number, because the mean of its divisors is an integer number (668331000).

Almost surely, 2^8275747985 is an apocalyptic number.

8275747985 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8275747985 is a deficient number, since it is larger than the sum of its proper divisors (2417548015).

8275747985 is a wasteful number, since it uses less digits than its factorization.

8275747985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650280.

The product of its digits is 39513600, while the sum is 62.

The square root of 8275747985 is about 90971.1381977823. The cubic root of 8275747985 is about 2022.7199239520.

The spelling of 8275747985 in words is "eight billion, two hundred seventy-five million, seven hundred forty-seven thousand, nine hundred eighty-five".